C'Thun drops the [Eye of C'Thun], which like most other end-bosses starts a reward quest for killing the last boss of an instance. Turning in the Eye allows players to choose from the following rewards:

There are eight Tier 2.5 set tokens in total that translate into the 5-piece armor set for all nine classes. Armor slots are represented by 2 Feet/Shoulder, Head, Legs, and Chest tokens, split evenly between classes. Players may receive either feet or shoulder armor for turning in one of the Qiraji Bindings.

The Three Bugs encounter drops loot depending on which of the three bosses is killed last, and can also draw from a shared loot table for the encounter.